From my own perspective, if you have 1 bitcoin in your wallet after five years, you can either be the millionaire or other way round but with d way bitcoin is trending prrlesently it showing a brighter future. Bitcoin is growing in potential manner. Do you know the price of bitcoin in Jan 2017 is just 1000$ and Jan 2018 is around 10,000$. Just imagine the growth of bitcoin, I am suprised by seeing the growth of bitcoin. Even some of Crypto currency have good potential as like bitcoin, they are Ethereum, litecoin, neo and Waves.